What Does the Following Figure Represent $\begin{array}{llll}\mathrm{R} & \mathrm{O}_{1} & \mathrm{X} & \mathrm{O}_{2} \\\mathrm{R} & \mathrm{O}_{1} & & \mathrm{O}_{2}\end{array}$

question 21

Multiple Choice

What does the following figure represent?
$\begin{array}{llll}\mathrm{R} & \mathrm{O}_{1} & \mathrm{X} & \mathrm{O}_{2} \\\mathrm{R} & \mathrm{O}_{1} & & \mathrm{O}_{2}\end{array}$

• A) True experimental design
• B) Quasi experimental design
• C) Two-group posttest design
• D) Solomon four-group design

---

Definitions:

Profoundly Retarded

A term referring to individuals with a severe level of intellectual disability, often characterized by minimal capacity for sensory-motor function.

Academic Skills

encompass the abilities and competencies related to learning and academic performance, including reading, writing, arithmetic, and study skills.

IQ Score

A numerical representation of an individual's cognitive ability relative to their age group, derived from standardized intelligence testing.

Learning Disability

A neurological disorder that affects a person's ability to process, learn, and use information, often impacting reading, writing, and mathematics skills.